Elastic-fluid turbine.



No. 761,238. y PATENTED MAY a1, 1.904. 11G. E. LINDMARK. ELASTIG IFLUID .TURBINE. APPLIGATION FILED JUNE 27, 1902. N0 MODEL.

INVENTOR ATTORNEY m: Noam; News co. Pnoravutuc.. wAsHlNMoN, o. c

UNITEDy STATES iatented May 31, 1904.

PATENT OFFICE.

ELASTlC-FLUID TURBINE.

SPECIFICATION forming part of Letters Patent No. 761,238, dated May 31, 1904.

Application iiled J une 27, 1902.

To aZZ whom, t mag/concern:

Be it known that I, ToRE GUSTAF EMANUEL LINDMARK, a subject of the King of Sweden and Norway, and a resident of Stockholm, Sweden, have invented a new and useful Improvement in Elastic-Fluid Turbines, of which the following is a specification.

The invention relates to means for increasing the eficiency of the exhaust from an elastic-Huid motor and to means interposed between twoof said motors for heating said exhaust during its passage from one motor to the other. If the working vmedium is steam or other vapor, such heating does not necessarily result in elevating the temperature of said exhaust; but it may also have for its object to dry the exhaust, according to circumstances.

My invention consists more particularly in a compound steam-turbine in which the exhaust of the first wheel of the series is heated by means located within the passagey traversed by said exhaust and before said exhaust enters the next wheel of the series to actuate the same.

The accompanying drawing` is a side elevation and partial longitudinal section of an apparatus embodying my invention.

The wheel-casing is made in two partsA- and A', secured together in any suitable Way. The bed-plate projections B may be formed integrally with the lower portion A. Upon two of said bed-plates are the standards C, which carry the bearings D for the wheelshaft E, on which is the usual belt-pulley F. The middle portion of the shaft E is enlarged, as shown at G. Adjacent to the head H of the casing and beginning onv the left of the drawing is formed a chamber a, which communicates with the steam-inlet pipe T. By means of the partitions Z) c Z and the casinghead I there are also formed within the casing three annular chambers f g t. The chamber z. communicates with the exhaust-pipe a'. Fast on the enlarged middle portion G of the wheelshaft E is a hub j, which passes through flanged openings in the casing-heads H I. The wheel-bodies Z m may be formed integrally with this hub. Each wheel-body has an annular opening 0 p q, surrounded by the Serial No. 113,529. (No model.)

iange fr s Z. The partition Z) has an annular opening to receive the flange 0 with a steamtight joint, and similar openings are formed in the partitions c (Z to receive the flanges p Q. A pipe u passes through the wall of the casing and forms a coil in the chamber f, which coil surrounds the first wheel 7n and then passes to the chamber g and forms another coil around the wheel Z and then passes out through the casing-Wall. It will be seen from this construction that the successive wheels ,7c Z m together form a compound or multiple turbine.

The steam-space in each wheel (from the first Y wheel of the series to the last) is progressively larger, so as to expose progressively greater bucket areas to the increasing volume of the successive exhausts. The working steam thus passes, as indicated by the arrows 2, from the pipe T to the chamberv a, thence .to the annular opening 0, to wheel Zo, thence to chamber f, to the wheel Z,`to chamber g, to wheel m, and from the chamber Zt, surrounding that Wheel, to the exhaust-outlet Z, thus acting upon all of the wheels and setting them in rotation. Meanwhile live steam traverses the coils of pipe u, as indicated by the arrows l, and as a consequence the steam escaping from the wheel k into chamber f becomes heated before passing to wheel Z, and the steam from wheel Z also becomes heated in the chamber g before passing to the wheel m.

I do not limit myself to the steam-pipe u,

loc'ated within the passage or chamber between the wheels, as a heating means for the exhaust. I may use any other means disposed in said passage competent to produce a like result-as, for example, an electrical heater of any known form or a gas-heater or any device for heating the steam by chemical reaction, all of which are broadly equivalents of the steam-heater hereinbefore described. Neither do I limit myself to a compound steamturbine of the specific type herein illustrated, since other forms of compounded steam-wheels are known.

I claimn l. In combination with an elastic-fluid turbine-wheel of the outward-flow type and a casing therefor, a duct adapted to convey hot gases located within said casing and surround- TOO ing and receiving the direct impact of the escaping fluid jets from `said Wheel.

2. In combination with the Wheels of a compound elastic-flu id turbine of the outward-110W typeand a casing thereforcontaining chambers for said Wheels, a continuous duct adapted to convey hot gases located Within said casing and surrounding and receiving direct impact 0f the escaping iiuid jets from said Wheel.

3. In combination with the Wheels of acompound elastic-Huid turbine of the outward-flow type and a casing therefor containing chambers for said Wheels, a continuous duct adapted to convey hot gases located Within said chambers and in spiral form therein; the said spirals respectively surrounding and receiving the direct impact of the escaping fluid jetsfrom said Wheels.

t. In combinationwith the Wheels of acompou nd elastic-fluid turbine of the outward-flow type and a casing therefor containing chambers for said Wheels,a continuous duct adapted to convey hot gases located within said chambers and in spiral form therein and also having intermediate portions extending outside of said casing; the said spiral portions respectively surrounding and receiving the direct impact of the escaping iiuid jets from said Wheels. Y

In testimony whereof I have signed my name to this specification in the presence of two sub scribing Witnesses.

TORE GUS'IAF EMANUEL LINDMARK. Witnesses:

WALDEMAR BOWRAN, H. RIDDERs'roLPE. 

